Cartons give products shelf presence, protect them during transport and carry information that does not fit on the primary pack. Bottles, tubes, blisters and pouches are frequently placed into cartons along with leaflets. Doing this by hand is slow and inconsistent at higher volumes, which is why cartoning machines have become common in pharmaceutical, cosmetic and food factories.
What a Cartoner Does
A cartoning machine takes flat carton blanks from a magazine, opens them, inserts the product and any leaflet, closes the carton flaps and discharges finished cartons. Some machines also print batch codes or apply labels.
Horizontal Cartoners
Horizontal cartoners load products into the carton from the side. They suit bottles, tubes, blister packs and other items that can be pushed horizontally. Horizontal machines are widely used in pharmaceuticals because they handle leaflets well and reach high speeds.
Vertical Cartoners
Vertical cartoners load products from the top, which suits items that are easier to drop than push, such as pouches, loose products or fragile items. They are common in food packaging.
Semi-Automatic Cartoning
For small volumes or many SKUs, semi-automatic machines combine manual product placement with automatic carton erecting and closing. They improve consistency without the investment of a fully automatic machine.
Closing Methods
- Tuck-in closure: flaps are tucked into the carton. Common and simple.
- Glue closure: hot melt glue seals the flaps for added security and tamper evidence.
The choice depends on product security requirements and market preferences.
Leaflet Handling
In pharmaceuticals, leaflets must be folded and inserted with the product. Cartoners can be fitted with leaflet feeders and folders, ensuring every carton contains the correct leaflet.
Coding and Inspection
Batch codes, dates and prices can be printed or embossed on cartons. Vision systems check codes and confirm that products and leaflets are present, rejecting faulty cartons.
Integration With Primary Packaging
Cartoners are usually placed after the labeller or blister machine. Synchronising the cartoner with upstream machines and providing buffers ensures smooth operation.
Carton Quality Matters
Many cartoner stoppages are caused by the cartons themselves. Cartons that are warped, poorly creased or stored in humid conditions do not open reliably. Glue on the side seam that has not set properly can cause blanks to stick together in the magazine. Agree carton specifications with your printer, including board grade, crease quality and dimensional tolerances, and inspect incoming deliveries. Store cartons flat in a dry area and allow them to reach room temperature before use if they have been kept in a cold warehouse.
Planning for Many Products
Pharmaceutical and cosmetic companies often run dozens of products through the same cartoner. Each needs its own carton size, leaflet and coding message. Change parts that can be swapped quickly, clear setting scales and stored recipes make these changeovers manageable. During machine selection, ask the supplier to demonstrate a changeover between two of your carton sizes and time it. The result tells you a lot about how the machine will perform in daily use.
Space and Operator Access
A cartoner needs space for carton and leaflet magazines that operators can refill without stopping the machine. Plan access around the machine so that refilling, cleaning and changeovers can happen comfortably and safely.
Choosing a Cartoner
Consider product type, carton size range, speed, leaflet requirements and changeover frequency. Ask for trials with your cartons and products.
Hilden supplies secondary packaging solutions, including cartoning machines, and can help integrate them into your existing filling and labelling lines.
